Two-thumb keyboard device



FIG. 1 is an isometric view of a two-thumb keyboard device;

FIG. 2 is a bottom isometric view of the two-thumb keyboard device of FIG. 1 showing the keys arranged for use by the digits of the hands for data entry;

FIG. 3 is a top view of the two-thumb keyboard device of FIG. 1 and FIG. 2 showing the left and right thumb keyboard portions;

FIG. 4 is a bottom view of the two-thumb keyboard device of FIG. 1 and FIG. 2 showing the keys arranged for use by the first and second digits of the left and right hands for data entry;

FIG. 5 is a top end view of the two-thumb keyboard device of FIG. 1 and FIG. 2;

FIG. 6 is a left side view of the two-thumb keyboard device of FIG. 1 and FIG. 2;

FIG. 7 is a right side view of the two-thumb keyboard device of FIG. 1 and FIG. 2; and,

FIG. 8 is a bottom end view of the two-thumb keyboard device of FIG. 1 and FIG. 2. 

I claim the ornamental design for a two-thumb keyboard device, as shown and described. 